Fireproof paint.



i have invented a new and useful Fireproof pounds of coal andlpreservative properties on the wood to whic i a ED srrArs A"' muonsCHARLES ENGELSON AND ROBERT ARCHMENT; OF VICTORIA, BRITISH GOLUMBIA,CANADA.

rmnrnoor Perm".

Specification of .lLetters Patent. Application filed October 3, 1912.Serial No. 723,773.

No Drawing.

To all whom it may concern: v: I a I Be it known that We, HABOLDC.Enonnsou and ROBERT ARCHMENT, citizens of the Dominion of Canada,residing at Victoria, 1n the Province of British Columbia, Canada,

We are aware that coal tar has been frequently used in thecompositionwof paint and that paint has been used having common sa t asan ingredient to confer fire-proof properties, but believe that thePaint, of which the tion.

Thisinvention relates to a fireproof paintand comprises the particularselection of ingredients and the manner of their admixture toproduce acheap paint having the desired fire-proof properties and that willmaintain ,its fluidity without settlement and have satisfactoryspreading and covering qualities.

he ingredients which compose the paint following is a specifica- Asdescribed the amount of water is necessary to reduce the coal tar todegrees of embody itself with the tar without the addition of the lye,which cuts the tar into finely divided particles. With the tar soattenuated with the Water, the lamp black is and the generalpropdi-tions used are as'folnecessary to impart the required blacknesslows: and covering qualities, and the whole inv 'gredients so mixed willnot retaintheir finel d ill? n 528 p divided nditionbut will graduallyEste 1 1 5 p 01m together, unless the coal Oll isadded and is Potaqhl ei p 9 g ym1Xed with-the compound when h a i n ll Ounds it is in thatfinely d d state. I

Lani b1a k g now particularly described our c g 14: g 01m 5 inventionand the manner of its preparation,

we hereby and desire ent is:

l. A fireproof paint'which consists of the following ingredients insubstantially the proportions stated to wit declare that what We claimas new These ingredients are mixed to form the to be protected in byLetters Patpaint in the following manner: To the one hundred and sixtypounds of gas tar, which constitutes the body of added the five poundsof common salt and the pound and a lialf of lye with about A 1 s fortypounds of the water, or suflicient to' 1 p form a saturated solution ofthe salt and 4 p Common salt v 5 ounds. lye. This mixture 18 wellstirred. The salt 7 P and lye confer the fire-proof properties and gf gg 23 patassmm ll )Ounds efiectively cut the tar enabling the salt T i dand lye to bethoroughly rhixed with it. The 6; i i1 5- 14 p i pound oflamp black and the remaining hun- O pou dred pounds of Water are thenadded to the compound, and the whole is well mixed topaints whichconsists in gather. This reduces the compound to the mixture of gas tarwith required fluidity and the lamp black conof common salt andpotassium hydroxid, fers opacity and blackness to the at then addinglamp black to the aforesaid adtenuated tar. To maintain the intimatelymixture and subsequently reducing the same mixed particles in apermanent condition of I to the desired fluidity with water, suspensionin the water and to enable the the mass so formed and then adding coalpaint to spread better, about fourteen 1' oil to the mass w'hilerepeatedly stirring the 2 The process of forming an lntimate oil arethen added, and the same.

mixture is thereafter well stirred twice 3. A fireproof paint, includinggas tar with a half-hour interval between the stir and water inapproximately equal parts, The paint is now ready for use and,associated with asuilicient quantity of a is thoroughly the strongalkali to enable the water to out but confers fireproof the tar that thetar may be held in suspension it applied Patented Feb.17,-191 4.

the required fluidity, but the salt will not.

a saturated solution" preparing fireproof mixing lowing ingredients insubstantially the pronames to this specification in the prmsenceportions stated, to wit of two subscribing Witnesses.

Gas tar 160 pounds. HAROLD GHARLES ENGELSON. gaterflunn; 140 pounds.ROBERT ARCIIMENT.

ominon salt 5 pounds.

itnesses: 4 Potassium hydr x1d 11} pounds. SMITH, In testimony whereofwehave signed our -W. WARBURTON.

-----L Copies of thil yatent may be obtainedjor five cents each, byaddressing'fiie fiomminioner pf laizentn,

' -Wa|h1ngton, D. 0.

